<div class="container"></div>

<style>
/* From Uiverse.io by csemszepp - Source: https://github.com/Afif13 - Website: https://github.com/Afif13  - Name: Afif13   - Tags: simple, material design, pattern */
.container {
  width: 100%;
  height: 100%;
  --s: 82px;
  --c1: #b2b2b2;
  --c2: #ffffff;
  --c3: #d9d9d9;

  --_g: var(--c3) 0 120deg, #0000 0;
  background: conic-gradient(from -60deg at 50% calc(100% / 3), var(--_g)),
    conic-gradient(from 120deg at 50% calc(200% / 3), var(--_g)),
    conic-gradient(
      from 60deg at calc(200% / 3),
      var(--c3) 60deg,
      var(--c2) 0 120deg,
      #0000 0
    ),
    conic-gradient(from 180deg at calc(100% / 3), var(--c1) 60deg, var(--_g)),
    linear-gradient(
      90deg,
      var(--c1) calc(100% / 6),
      var(--c2) 0 50%,
      var(--c1) 0 calc(500% / 6),
      var(--c2) 0
    );
  background-size: calc(1.732 * var(--s)) var(--s);
}

</style>
    